gnu: libwebp: Update to 1.1.0.

* gnu/packages/image.scm (libwebp): Update to 1.1.0.

gnu/packages/image.scm

@@ -1102,7 +1102,7 @@ language bindings to VIGRA.")
 (define-public libwebp
   (package
     (name "libwebp")
-    (version "1.0.3")
+    (version "1.1.0")
     (source
      (origin
        ;; No tarballs are provided for >0.6.1.
@@ -1113,7 +1113,7 @@ language bindings to VIGRA.")
        (file-name (git-file-name name version))
        (sha256
         (base32
-         "1l8h9d3z3kla567ilmymrgg8vc2n763g8qss1hah8dg832hbqkxf"))))
+         "0r2yy9if0ndvpzadk39bigvsygyqnlv0xjb9w2aj6rs534mncazz"))))
     (build-system gnu-build-system)
     (inputs
      `(("freeglut" ,freeglut)